Effect of Tannic Acid and Cellulose Nanocrystals on Antioxidant and Antimicrobial Properties of Gelatin Films

Autor(es)

Leite, Liliane Samara Ferreira ^{[1, 2, 3]} ; Pham, Cynthia ^{[4, 5]} ; Bilatto, Stanley ^[3] ; Azeredo, Henriette M. C. ^{[3, 6]} ; Cranston, Emily D. ^[4] ; Moreira, Francys Kley ^[7] ; Mattoso, Luiz Henrique C. ^[3] ; Bras, Julien ^{[2, 8]}

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Carlos, Grad Program Mat Sci & Engn PPGCEM, BR-13565905 Sao Carlos, SP - Brazil

^[2] Univ Grenoble Alpes, CNRS, Grenoble INP, LGP2, F-38400 Grenoble - France

^[3] Embrapa Instrumentacao, Natl Nanotechnol Lab Agribusiness, BR-13560979 Sao Carlos, SP - Brazil

^[4] Univ British Columbia, Dept Wood Sci, Vancouver, BC V6T 1Z4 - Canada

^[5] Univ British Columbia, Dept Chem & Biol Engn, Vancouver, BC V6T 1Z4 - Canada

^[6] Embrapa Agroind Trop, BR-60511110 Fortaleza, Ceara - Brazil

^[7] Univ Fed Sao Carlos, Dept Mat Engn, BR-13565905 Sao Carlos, SP - Brazil

^[8] Nestle Res Ctr, CH-1000 Lausanne - Switzerland

• Tipo de documento: Artigo Científico
• Fonte: ACS SUSTAINABLE CHEMISTRY & ENGINEERING; v. 9, n. 25, p. 8539-8549, JUN 28 2021.
• Citações Web of Science: 0

Resumo

This work explored gelatin films incorporated with cellulose nanocrystals (CNC) and tannic acid as bio-based multifunctional food packaging materials. The effects of nonoxidized tannic acid (nTA), oxidized tannic acid (OTA), and CNC on the physical, antioxidant, and antimicrobial properties of gelatin films were investigated. Rheological and ultraviolet (UV)-visible measurements showed that gelatin films with nTA and CNC presented a lower chemical cross-linking and more noncovalent intermolecular interactions in comparison with those containing OTA. When compared to the film containing only nTA, the one with nTA and CNC presented substantial increases in the antioxidant capacity (52%), UV barrier (76%), tensile strength (79%), and water vapor barrier (67%) properties of gelatin. This evidence suggested that noncovalent interactions from nTA molecules and CNC play an important role in the modification of gelatin. The gelatin films designed with nTA and CNC also exhibited antimicrobial effects against Staphylococcus aureus and Escherichia coli. Overall, the incorporation of CNC and nTA as active components to gelatin films is a suitable approach for producing sustainable, multifunctional materials for food packaging and other applications. (AU)

• Processo FAPESP: 18/00278-2 - Funcionalização, caraterização e avaliação das propriedades de nanocristais de celulose e seus bionanocompósitos a base de proteínas
• Beneficiário: Liliane Samara Ferreira Leite
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado
• Processo FAPESP: 18/10899-4 - Aproveitamento da biomassa lignocelulósica residual do processamento de etanol 2G para obtenção de nanocelulose via rota enzimática
• Beneficiário: Stanley Endrigo Bilatto Rodrigues
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado